Embossing roller



E. C. AMIDON ET AL EMBOSS ING ROLLER Filed June 11, 1924 lilllllllllllIn Vemf'ons.

age/2e 607m ddorg,

Patented Sept. 15, 1925.

* UNITED STATES PA'JTEZNTJOFFI'CE. i

. "nuennii c. aivxrno vn vn aosnrn; J. Dismal), or COREY, PENNSYLVANIA.l

H nivnaossme noftnnn'; if I p F i r i Application filed June 11, lezaserrhnon{19,36

To all whom it may concern:

BQJtkDOWn that we, EUGENE C. AMIDON and JOSEPH J. DESMOND, citizens ofthe United States, "residing at Corry, in the 5 countyojf Erie and.State (of Pennsylvania,

have jointly invented certain new and useful Improvements in EmbossingRollers;

and we do hereby declare'the following to be a full, clear, and exactdescription of the invention, such as will enable others skilled in theart to which it appertains to make and use the same, reference being hadto the accompanying drawings, and to the letters of reference markedthereon, forming part of this specification.

This invention relates to embossing machines, and particularly to suchmachines adapted for embossing leather.

As is well known, skins, from which leather is made, are not of uniformthickness, varying slightly at different points through their expanse,so that it is exceedingly difficult, if not impossible to obtain aperfect imprint of the embossing roller at all points throughout thelength and breadth of the piece of leather.

To overcome this inequality in the thick I ness of the leather, I havedesigned a platen roller, having a flexible surface, to hold the sheetof leather against the embossing roller, with equal pressure throughoutthe length of said rollers.

The features of my invention will appear hereinafter, and areillustrated in the accompanying drawings, in which:

Figure 1 is aside elevation of upper and lower embossing rollersembodying my invention.

Figure 2 is a transverse section of the lower roller shown in Fig. 1, onan enlarged scale.

Figure 3 is a side view of a fragment of said lower roller, partially incentral section and partially in elevation.

Figure 4 is a vertical central section of one of the rings of said lowerroller.

In these drawings A indicates a hollow roller which is provided withhollowjournal bearings at each end thereof, by means of which saidroller is mounted in a suitable supporting frame, (not shown). Steam orother suitable heating medium is supplied to said hollow roller throughsaid hollow journal bearings by means of which the characters suitableformed on the surface of said hollow roller A will be sufiiciently a Forthe heated to prop ashereinafterdescribed. 1

- .Thelower, oiiplaten roller Elconsists of a shaft F which is providedwith journal rl'y perform their function,

bearings on: the; ends thereof by'meansof which the shaft F is mountedin the supporting frame, (not shown). The intermediate portion of saidshaft is provided with a plurality of flat surfaces preferably eight innumber. In these flat surfaces are placed top-bolt-stud posts G, seeFigs. 2 and 3.

Embracing said stud posts G are springs H, and embracing the outer endsof said springs H are rings J, which rings J constitute the cylindricalsurface of the lower, or platen roller, which is adapted to press thematerial to be embossed against the upper roller A.

The rings J are ping flanges J and the'diameter there-of reducedsufficiently to provide an annular clearance space between it and theassociate flange J.

Each ring J has provided on its inner curved surface, open sidedrecesses K adapted to receive the outer ends of the spring H for thepurpose of preventing the rings J from rotating on the springs H.

purpose of securing the rings J longitudinally on the shaftF, screwthreads 7 are provided thereon, upon which collars L are screwed, sothat said rings J can be maintained in close frictional contact witheach other.

The springs H are each tested to resist the required embossing pressureexactly, and are each subjected to a slight initial compression when inplace as shown in Figs. 2 and 3.

provided with overlap- The lower or platen roller, when constructed asshown in the drawings and above described, has suflicient longitudinalflexibility, to cause all points of the expanse of a side of leather orother material to be J the flange J 2 having pressed against theembossing roller A with equal pressure, so that there will be noportions of the embossed surface which are not clear and distinct.

Having thus fully shown and described my invention what I claim as newand desire to secure by Letters Patent is:

1. In a machine of the class described, a

platen roller comprising a shaft, radial stud posts on said shaft,radial springs on said stud posts, a series of rlngs enclosing and sup-2. A pressure roller comprisinga shaft,v

stud posts on said shaft, springs on said posts, a series of ringsenclosing and supported on said springs, sem1 cylindrical recesses onthe inner surface of said rings to re ceive the outer ends of saidsprings, and overlapping cylindrical flanges on the adjacent edges ofsaid rings.

3. A pressure roller comprising ashaft,

radial stud posts on said shaft, springs on said stud posts, a ringenclosing and compressing said springs, an axial annular flangeextending from the outer circumference at one edgeof said ring,gand acylindrical flange on the opposite edge of said ring of less diameterthan the inner diameter of tui'es.

EUGENE C. AMIDON. JOSEPH J DESMOND.

In testimony whereof We affix our signa-

